Cutter-bar for harvesters.



G. BRADT.

GUTTER BAR POR HARVESTERS.

APPLICATION FILED APR. 15, 1909.

Patented Jan. 11, 1910.

marre GARRET BRADT, OF CANAJOHARIE, NEW YORK.

CUTTERBAR FOR HARVESTERS.

Application filed April 15, 1909.

To @ZZ whom fit may concern:

Be it known that I, GARRET BRADT, a citizen of the United States,residing at Canajoharie, in the county of Montgomery and State of NewYork, have invented certain new and useful Improvements in Cutter- Barsfor I-Iarvesters, of which the following is a specification.

My invention relates to cutter bars for harvesters and the like, and oneof the objects thereof is to provide means whereby the sectionscomprising the knife may be readily disconnected and detached fromeither end of the knife-bar.

Another object contemplated by the invention is the provision of novellocking means for the end sections of the knife.

To the accomplishment of the recited objects, and others coordinatetherewith, the preferred embodiment of my invention resides in thatarrangement and construction of parts hereinafter described, illustratedin the accompanying drawings, and embraced within the scope of theappended claims.

In said drawings z-Figure l is a perspective view of the cutter barembodying my invention. Fig. 2 is a top view of a portion thereof. Fig.3 is a top view of a portion of the knife-bar, showing one of thesections partly removed. Fig. e is a transverse sectional view takenalong lines 4 4 of Fig. 2, and Fig'. 5 is a transverse sectional viewtaken along lines 5 5 of Fig. 3.

Similar reference characters designate corresponding parts throughoutthe several views.

In carrying' out my invention, I utilize a knife-bar 5 which isprovidedwith a longitudinally disposed, medially arranged L- shaped slot G, thesaid slot running throughv opposite ends of the bar. In this connectionit will be observed that I form a bottom por tion 7 of the knife-barslightly thicker than the upper portion 8 thereof, to serve as areinforcement.

As previously stated, the knife comprises a plurality of sections 9,said sections having a lower substantially right angular por tion l0which. is designed for engagement with the correspondingly shaped slot 6in the knife-bar 5. All of the knife sections are identical inconstruction with the exception of those located at the outer terminalsof the knife-bar which operate in a manner to be presently explained forthe purpose of main- Specication of Letters atent.

Patented Jan.. 11, 1910.

Serial No. 490,040.

taining intermediate sections in proper relative positions.

Adjacent each terminal and preferably on the thicker portion 7 of theknife-bar I provide a squared recess ll which affords a receptive spacefor the nut l2. rI`he base of the recess ll is so disposed with respectto the L-shaped slot 6 of the knife-bar that a slotted communication 13is established, the same having registration with the similarly disposedrecess la on the upper corner of the angularly defiected portion 10 ofthe end knives. In addition to the means just described for securing theknife sections to the knife-bar, I employ a bolt l5 which extendstransversely through the entire organization and is held fast in anobvious manner by the nut l2.

With this construction of cutter bar the knife sections may be detachedfrom the knife-bar at either terminal of the latter which feature 1s amarked advantage over cutter bars when provision 1s made for the removalof the knife sections at only one end4 of the bar. In furtherance ofthis principle the means for retaining the knife sections in properrelationship is positive and eliminates any possibility of the sectionsbecoming loosened or otherwise disarranged as to impair the operation ofthe device.

It should be understood that in its broader aspect the inventioncomprehends the elnployment not only of the various means described, butof equivalent means for performing the recited functions.

Vhile the arrangement shown, is thought, at the present time, to bepreferable, it is desired to reserve the right to eifect suchmodifications and variations as may come fairly within the scope of theappended claims.

What I claim is l. A. cutter bar comprising a knife-bar having an Lshaped slot arranged the entire longitudinal extent thereof, a pluralityof knife sections, each section having a short angular portion forengagement with said slot, and means extending transversely through saidknife-bar at a point outwardly of the shorter angular portions of theouter end knife sections for locking all of said knife sectionstogether.

2. A cutter bar comprising a knife-bar having a slot extending theentire longitudinal extent thereof, a plurality of knife sections, eachsection having an angular portion for engagement With said slot, theterminals of the knife-bar, and the end knife sections havingregistering openings, each of the angular portions of the end knifesections being provided with a recess, and means extending through saidopenings and engaging said recesses for locking all of the knifesections together.

3. A cutter bar comprising a knife-barhaving a slot extending the entirelongitudinal extent thereof, a plurality of knife sections, each sectionhaving an angular portion for engagement With said slot, the terminalsof the knife-bar and the end knife sections having registering openings,each of the angular portions of the end knife sections being providedWith a recess, a bolt extending` through said openings, and a nutcarried by said bolt and seated Within the opening of the knife-bar,said nutadapted to engage said recess for locking all of the knifesections together.

In testiinon;7 whereof I atlix my signature in presence of twoWitnesses.

GnRRET BRADT.

lVitnesses T. G. VANER, MARsHALL KANE.

